Just Thought if anyone was intrested, there is an easy way to get extra ventilation/coolent without spending money on heat sink etc.

First off this looks/works better with a cx canopy (the smooth one) but you can use the cx2 one.

Stage 1. Get an extremly sharp knife (the sharper the better)

2.Get the knife and cut along the side of the canopy where the black traslucent part attaches to the solid colour part but leave the part attached on the top and bottom
3. Now there should be two of black only palstic flaps at the side of the canopy and simply fold these up so there should now be two gaps where the flaps were these are the vents that increase flight time

Enjoy